mirror of
https://github.com/ether/etherpad-lite.git
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96 lines
3 KiB
JavaScript
96 lines
3 KiB
JavaScript
/**
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* Copyright Yaco Sistemas S.L. 2011.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS-IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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var log4js = require('log4js');
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var Changeset = require("ep_etherpad-lite/static/js/Changeset");
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var contentcollector = require("ep_etherpad-lite/static/js/contentcollector");
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var cheerio = require("cheerio");
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function setPadHTML(pad, html, callback)
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{
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var apiLogger = log4js.getLogger("ImportHtml");
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var $ = cheerio.load(html);
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// Appends a line break, used by Etherpad to ensure a caret is available
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// below the last line of an import
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$('body').append("<p></p>");
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var doc = $('html')[0];
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apiLogger.debug('html:');
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apiLogger.debug(html);
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// Convert a dom tree into a list of lines and attribute liens
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// using the content collector object
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var cc = contentcollector.makeContentCollector(true, null, pad.pool);
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try{ // we use a try here because if the HTML is bad it will blow up
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cc.collectContent(doc);
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}catch(e){
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apiLogger.warn("HTML was not properly formed", e);
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return; // We don't process the HTML because it was bad..
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}
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var result = cc.finish();
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apiLogger.debug('Lines:');
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var i;
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for (i = 0; i < result.lines.length; i += 1)
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{
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apiLogger.debug('Line ' + (i + 1) + ' text: ' + result.lines[i]);
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apiLogger.debug('Line ' + (i + 1) + ' attributes: ' + result.lineAttribs[i]);
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}
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// Get the new plain text and its attributes
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var newText = result.lines.join('\n');
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apiLogger.debug('newText:');
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apiLogger.debug(newText);
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var newAttribs = result.lineAttribs.join('|1+1') + '|1+1';
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function eachAttribRun(attribs, func /*(startInNewText, endInNewText, attribs)*/ )
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{
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var attribsIter = Changeset.opIterator(attribs);
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var textIndex = 0;
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var newTextStart = 0;
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var newTextEnd = newText.length;
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while (attribsIter.hasNext())
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{
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var op = attribsIter.next();
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var nextIndex = textIndex + op.chars;
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if (!(nextIndex <= newTextStart || textIndex >= newTextEnd))
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{
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func(Math.max(newTextStart, textIndex), Math.min(newTextEnd, nextIndex), op.attribs);
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}
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textIndex = nextIndex;
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}
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}
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// create a new changeset with a helper builder object
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var builder = Changeset.builder(1);
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// assemble each line into the builder
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eachAttribRun(newAttribs, function(start, end, attribs)
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{
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builder.insert(newText.substring(start, end), attribs);
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});
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// the changeset is ready!
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var theChangeset = builder.toString();
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apiLogger.debug('The changeset: ' + theChangeset);
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pad.setText("");
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pad.appendRevision(theChangeset);
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}
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exports.setPadHTML = setPadHTML;
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